Paleo Indians

What did the San Pedro River valley look like
11,000 years ago? It wasn't the same then as it is
today. One difference is that the river had not
eroded quite so deeply into its valley as it now
has. The climate was cooler and wetter and more
water was probably flowing in the river. Fossils
prove that plant and animal communities were not
the same either. Remains of a number of large
animals that are now extinct have been unearthed
at several sites along the San Pedro, as well as at
other places in Arizona and the Southwest.
Points from spears of ancestral humans have been
found in association with the fossil remains of
some of the animals.

Publication Date

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